Have you checked in the manual???

If so and it's still giving problems:

If it's an original factory built module then I'd contact Emilie via the mutable support email address on the site... She's incredibly quick to reply and helpful

If it's a clone you've bought - contact the builder...

If it's a clone you built modwiggler has a Music Tech diy subforum that has lots of useful information on troubleshooting mutable builds (but it's a long read over 100 pages iirc)

"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia

Utility modules are the dull polish that makes the shiny modules actually shine!!!

sound sources < sound modifiers < modulation sources < utilities